摘要
液压机在大负载下的控制稳定性对生产效率和产品质量具有重要影响。考虑到大部分负载敏感系统都面临着进出油口联动节流的情况,设计了一种对系统信息需求低以及具备优异抗干扰性能的负载敏感系统。以扩张状态观测器(ESO)对系统总扰动状态实时估计,利用扰动补偿律完成补偿过程,显著改善系统闭环性能。构建得到AMESim仿真模型实施仿真测试,研究结果表明:加入正弦干扰前后,相比较PID控制ADRC控制方式达到更小系统跟踪误差。位置自抗扰控制器能够补偿干扰力对位置产生的影响,获得更强鲁棒性。该研究有助于提高液压机控制效率,为后续参数优化奠定一定基础。
Hydraulic press is widely used in the field of forging,and its control stability under large load determines the rolling efficiency.Considering that most load sensing systems are faced with the situation of linkage throttling of oil inlet and outlet,a load sensing system with low information requirement and excellent anti-interference performance is designed.The extended state observer(ESO)is used to estimate the total disturbance state of the system in real time,and the disturbance compensation law is used to complete the compensation process,which significantly improves the closed-loop performance of the system.The AMESim simulation model is built and the simulation test is carried out.The research results show that compared with PID control and ADRC control mode,the system tracking error is smaller before and after sinusoidal interference is added.The position active disturbance rejection controller can compensate the influence of the interference force on the position and obtain stronger robustness.The research is helpful to improve the control efficiency of hydraulic press and lay a certain foundation for the subsequent parameter optimization.
作者
王纪文
孙阳阳
刘康
WANG Jiwen;SUN Yangyang;LIU Kang(School of Mechanical and Electrical Engineering,Yellow River Jiaotong University,Jiaozuo 454000,Henan China)
出处
《锻压装备与制造技术》
2024年第4期93-95,共3页
China Metalforming Equipment & Manufacturing Technology
关键词
自抗扰控制
独立负载
敏感系统
优化分析
Active disturbance rejection control
Independent load
Sensitive system
Optimization analysis
作者简介
王纪文(1998-),男,助理实验师,主要从事高等教育工作。E-mail:Wjw913647262@163.com。
